. >> they hit us hard. i had four guitars stolen. i had both of our laptops, i had my grammy medal stolen. >> reporter: flynn earned a grammy nomination for his band machinehead for the 2007 release "the blackening." he believes whoever did this knew what was inside his home. one was a mini-guitar he gave to his eldest son. the other, the one he wrote songs and toured with back in 1994. >> the other one was a washburn dymbolt that was given to me by the late dimebag darrell. this guitar was incredibly sentimental. >> reporter: he says one neighbor saw a couple of suspicious cars in the neighborhood. >> we have one tip from the corner here, a green/teal american-made pickup truck that drove very slowly up around the corner, came back, drove very slowly. >> reporter: flynn is hoping that a tip and fingerprints taken from two remaining guitars leads to an arrest. he is offering a reward for each guitar. cheryl hurd, nbc bay area news. >>> time is 4:38. time to check the commute with mike. some more construction in the east bay. >> yeah